Finding the Fourth Proportional to 79,403,068.80, 119,104,603.20 and 76,043,836.80
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Solution
The fourth proportional to 79,403,068.80, 119,104,603.20 and 76,043,836.80 is: 114,065,755.20
Step by Step Solution
- Step 1: Write the proportion equation
79,403,068.80 : 119,104,603.20 = 76,043,836.80 : x - Step 2: Convert to fraction form
79,403,068.80/119,104,603.20 = 76,043,836.80/x - Step 3: Cross multiply
79,403,068.80x = 119,104,603.20 × 76,043,836.80 - Step 4: Simplify right side
79,403,068.80x = 9,057,171,007,869,558 - Step 5: Solve for x
x = 9,057,171,007,869,558/79,403,068.80 - Step 6: Final answer
x = 114,065,755.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.